/Engine/Source/Runtime/Core/Public/ProfilingDebugging/TraceAuxiliary.h
Callback whenever a trace recording is stopped. TraceType tells what kind of trace it is. TraceDestination will be either the the filename and path for a file trace or the network connection for a network trace
DECLARE_TS_MULTICAST_DELEGATE_TwoParams ( FOnTraceStopped, [FTraceAuxiliary::EConnectionType](API\Runtime\Core\ProfilingDebugging\FTraceAuxiliary\EConnectionType) TraceType, const [FString](API\Runtime\Core\Containers\FString) & TraceDestination )